In this study, the interaction between diode
laser radiation and chicken soft tissue was studied in vitro
by a high-speed digital video camera. We used a diode
laser with a wavelength of (980  10) nm and average
power of 10 W. The diode laser was operated in continuous
wave (CW) and pulsed modes. In CW mode, the average
laser radiation power was 10 W; in pulsed mode, the
average laser radiation power was 10 W and the peak
power was 20 W. Diode laser radiation was delivered to
soft tissue (chicken meat) using a quartz optical fiber with
either a clear distal end (clear tip) or a distal end containing
an optothermal converter (hot tip). Application of the diode
laser in pulsed mode resulted in crater depths and areas of
collateral damage in soft tissue about 1.6 times greater than
those observed in CW mode at treatment with the clear tip.
Significant differences in the crater depth and collateral
damage width of chicken meat were not found after hot-tip
treatment with the diode laser in CW and pulsed modes.
Soft tissue treated with the hot tip showed crater depths
about 3.4 times greater than those observed after treatment
with the clear tip. Hot tip treatment further resulted in
collateral damage widths about 2.7 times lower than those
obtained after treatment with the clear tip.

• Comparison of diode laser in soft tissue surgery using continuous wave and pulsed modes in vitro